Dyfyniad APA
Dirck, B. R. (2007). Lincoln the lawyer. University of Illinois Press.
Dyfyniad Arddull Chicago
Dirck, Brian R. Lincoln the Lawyer. Urbana: University of Illinois Press, 2007.
Dyfyniad MLA
Dirck, Brian R. Lincoln the Lawyer. University of Illinois Press, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.